Sumitomo Kinzoku Kogyo Kabushiki Kaisha

Kabushiki Kaisha Yamamoto Suiatsu Kogyosho

Nihon Valqua Kogyo Kabushiki Kaisha

Hitachi, Ltd.

Sumitomo Metal Industries, Inc.

Wataru Furukawa

Takashi Yamaguchi

Kazuo Sasaki

Mitsuo Yoshida

Takahiro Nakamura

Akira Osaka

Susumu Itoh

Tadashi Kanaya

Tuneo Ichiishi

Yoriyuki Inoue

Tatsuo Yanagiuchi

Kazuo Houji

A packing for use in a steel-pipe hydraulic testing apparatus, consisting of: an annular body having an annular cut in its inner peripheral portion; a plurality of backing pieces fastened to the wall of the annular cut at a given circumferential spacing and directed in the radial direction; and a plurality of adapter pieces embedded in the inner peripheral walls of the annular body of the packing at a given circumferential spacing and exposed to the annular cut, so that the aforesaid plurality of backing pieces may be each slidable on the surfaces of a pair of adjoining adapter pieces. This packing is contracted due to a hydraulic pressure being applied to the outer periphery of the body of the packing, and as a result the respective adapter pieces will slide on the surfaces of the adapter pieces in the circumferential direction of the packing.

Packing for use in steel-pipe hydraulic testing apparatus

In an apparatus for transporting cylindrical steel articles by rolling down on inclined skid rails, a plurality of electromagnets are provided along extension of the skid rails so as to reduce the speed of rolling down of the articles repeatedly during transportation on the skid rails by applying forward and reverse excitations to each of the electromagnets at a predetermined timing thereby to transport the articles in a pitch transfer mode.

Apparatus for transporting cylindrical steel articles

Growing community of inventors

Wakayama, Japan

Wataru Furukawa